/*
 * Copyright (C) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.loopj.ohos.http.sample.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;

/**
 * FileUtil
 */
public class FileUtil {
    /**
     * String
     *
     * @param is String
     * @return String
     * @throws Exception String
     */
    public static String convertStreamToString(InputStream is) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();
        String line;
        while ((line = reader.readLine()) != null) {
            sb.append(line);
        }
        return sb.toString();
    }

    /**
     * getStringFromFile
     *
     * @param file getStringFromFile
     * @return getStringFromFile
     * @throws Exception getStringFromFile
     */
    public static String getStringFromFile(File file) throws Exception {
        FileInputStream fin = new FileInputStream(file);
        String ret = convertStreamToString(fin);
        // Make sure you close all streams.
        fin.close();
        return ret;
    }

}
